Railway-train stop.



1'. M. 'Hmvlvolvl RAILWAY TRAIN STOP. APPLICATION FILED MAY I, 1914.

1,1 78,233, Patenf' Apr 4' w'.

INVENTOR, J07z7z M fqrzrzorz,

IBI/MM ATTORNEY.

JOHN Irl. HANNON, OF HARTFORD, CONNECTICUT.V

RAILAY-TRAIN STOP.

Specication of Letters Patent.

retreated apr. a, raie.

l.Applcation filed May l, 1914. Serial No. 835,72.

To all IIJ/wm t may concern Be it known that l, JOHN M. Haxxox,

a citizen of the llnited States of America, and resident of Hartford, in the county of Hartford and State of Connecticut, have invented certain new and useful lmprovements in Railway-Train Stops, of which the following is a" full, clear, and exact description.

This. invention relates to means for the, stopping ot a railway train which may run past a si Qnal or into a block while another train is in the saine block, and .which is automaticallyl operative in cases where the engineer ironr carelessness or disability does not properly check or stop the train.

The invention includes -the combination with a locomotive, a track ayon which it runs, a means, such as the throttle valve operatingl lever for controlling` the running ol the locomotive. of a helieally grooved rotative memberwith which said controlling` means engages, a compressed air or otherl motor to operate said ygrowed member and which has a controller, mechanismen a locomotive extending froml adjacent the l traekway to the motor controller1 for operating the latter, and means at intervals (such pas the distance between the blocks) along .30

` l'-mechanlsm.

the. trackway for actuating the last named The invention described in conjunction operating lever and forth in 'the claims.

In theA drawings :-Figure l is a side elevation of a locomotive with the apparatus of the present invention indicated as applied thereon. Fig. 2 is a partial plan view showing parts of the apparatus loc-ated in the cab'. Fig. 3 is a plan view, and Fig. 4L is an elevation' showing the throttle valve devices directly coperative therewith. Fig. 5 is a side elevation showing ferred to. Fig. 6 is a plan view, and Fig. 7 is a side elevation indicating the supplemental or third rail and parts in this invention carried by the locomotive truck coacting withsaid supplemental rail.

In the drawings, A represents the stem ot' the throttle valve to which the throttle le@ ver B is Yconnected `as usual, said throttle lever being pivoted at a. to 1 /bracket or sup port therefor. The throttle lever has its portion toward its connection with thel throttle valve stem made in the form of a l from end to end on an offset, or shoulder, la,

parts in detail to be hereinafter re' voke as represented at said yoke having an embracing relation to a rotatable member, C, which has the contour thereof curved arc generated from the pivot a.; and the so shaped member, C. has a comparativelyv deep helical groove, e, extending from end to end thereof. On the outer barlike portion of the throttle valve lever is a slidablc member, D, having a tooth, 7', for engagement in the groove, e. The slidable member 1s by link f/ connected with a short arm, g2 of the stem, g3 oi' a hand wheel, g* which is rotatably carried on the outer end of the throttle lever, B, so that by the rotation olthe hand wheel the slidable member, D, ymay have thel tooth f thereof disengaged from and rengaged with the helical groove, e', ot' the rotatable member, C. The said rotatable member has theshaft C? thereof in connection with a motor, here conventionally represented by F and understood in the present instance as being` an air motor ot a common type and operated by compressedair, supplied from a suitable source by the pipe F2. This pipe has a valve, z.-z' representing the stem thereof,-on which 'a lever, y', is al'liXed. Coacting with the air valve lever, j, is a slide rod, K, ranginglongitudinally of the locomotive, and having at its rear endan located for engagement with the air valve lever,

On the truck, K, comprising the small wheels of the locomotive is pivotally connected a frame, J, which may swing' vertically; and this frame carries a wheel or roller, L, which runs along the supplemental rail, M. which is between the usual track rails, N N, and which supplemental rail is made with an inequality, m, as represented in Fig. 7. Pivotally hung from the locomotive body, at the part Q of the latter which is supported on the truck, K, is another vertically swinging frame or yoke, P, a part of which rests. on the roller 4nect the throttle lever 'cally grooved rotatable A rail is present, and

he frame J may swing transversely in unison with the truck, K, as in the rounding of curves, etc., but by the provision ot the supplemental trame, l), hung from the locomotive body, such frame and its connections with the slide bar do not partake of any of the swinging or transverse movements of the truck, and are not distorted by the movement of the trnclr.

ln the running ot the train under the careful driving ot the. engineer, he will upon coming into a block or wherever a signal is set for safety or to proceed, through the handv wheel., gt, momentarily disconcatch from the helimember, C, thereby insuring the retention ot the throttle valve in the open position in which it may have been set; and the arrangements represented in Figs. 3 and 4: are such as to permit the engineer to swing the throttle valve lever to more or less fully open or close the throttle valve. Assuming, however, that the locomotive reachesv a place in the trackway where the inequality, m, in the supplemental the engineer is not attentive to the signals. the valve, h, of the air motor pipe will be automatically opened, the helicall)7 grooved member, C, will acquire rotation thereby catch tooth, f, ot the slidable member of the throttle lever, and the latter will be swung on its pivot, a, to t'ully close the throttle valve Jfor effecting cessatiom of the driving power ot the locomotive. The engineer may restore the running conditions by the ontward withdrawal 'of the slide catch, opening the throttle valve, whereupon the catch will be again placed in engagement with 'the grooved member, At the proper time, after the mechanism has-automatically operated, as explained, the engineer will man- 'ually close the air motor valve through ther medium of the handle jg made as an extension of the lever, 'y'. The slide bar, L, may also have connection with the ordinary or any air brake valve, so that'in additionftothe austopping of the train.

endwise forcing having a tomatic closing of the throttle valve, the air brakes may be set for the more immediate It is noted that the helioally grooved rotatable member is provided at the outer end of the spindle C2 with'va hand wheel C3 which permits the en gineer to impart rotative movement to the said member C and thereby adjust the throttle valve in its more or less opened condition as may be desired, and which might not in all cases be possible through the throttle lever when account is taken that the pitch vot' the helical groove is comparatively steep.

I claim: l

l. The combination with the throttle valve lever of a locomotive, of a rotative helically grooved member with which the said lever engages` a swinging roller-provided trame carried by the locomotive, a fluid actuated motor operable Ito rotate said hellicall)7 grooved member having a controlling valve therefor, and means operated by the said roller carrying f ame for opening said motor controlling valve.

2. The combination with thethrottle op erating lever of a locomotive provided with for operating a slidable catch and means such catch. of a hehcally grooved rotatable member with which said catch engages and an air motor in driving connection with said grooved member having a valve and an operating lever arm therefor, aV slide bar shouldercoacting with said lever arm, an angle lever having one arm' thereo connected to said bar, a swinging tram lmounted on the locomotive and having a link connection with theother arm of said angle lever and means 'for imparting a swinging motion to the said frame.

Signed by me at Springfield, Mass., in presence ot two subscribing witnesses.

JOHN M. HANNON.

lVitnesses z TVM. S. BELLows, G. R. DmsCoLL. 

